From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Standardisation of parts for front and rear brake drums made in Chromidium.
| Identifier | ExFiles\Box 171\2\ img348 | |
| Date | 14th October 1937 | |
| RR 755 (toH) 46071 18-8-37 WHK 27059 COMPLETED 16.11.37. PHANTOM III STANDARDISATION of PARTS. Date 14.10.37. X No. 1028. Drawing No. S5623/4 Part List Description of Parts: FRONT AND REAR BRAKE DRUMS MADE IN CHROMIDIUM. Origin: To enable us to use Ferodo M.L. M.L. has not been tested with present drums. Report of Experimental Test: The original reason for preferring to use "Chromidium" was that it is 7/- per cwt. cheaper than "Millenite". "Chromidium" drums ran 16,000 miles on 32-EX against M.L. and were satisfactory; also fitted to 33-EX. The "Chromidium" tested was brought out but it is proposed to cast in future in our own foundry. COST TABLE MATERIAL £ s. d.{John DeLooze - Company Secretary} LABOUR £ s. d.{John DeLooze - Company Secretary} CHARGES £ s. d.{John DeLooze - Company Secretary} TOTAL £ s. d.{John DeLooze - Company Secretary} Cost of Old Part: 5 11 0, 1 2 2, 1 18 9, 8 11 11 Cost of New Part: 1 8 3, 1 15 3, 3 7 6, 6 11 0 Nett Decrease: 2 0 11 Signature from Cost Dept. that above is correct. Q/Rb.{R. Bowen} 13.10.37. APPROVALS INITIAL, DATE, REMARKS SG.{Arthur F. Sidgreaves - MD}, 16.11.37., Agreed Sg.{Arthur F. Sidgreaves - MD} HS.{Lord Ernest Hives - Chair}, 16.11.37., Agreed Hs.{Lord Ernest Hives - Chair} C., 15.10.37., Agreed C, BY.{R.W. Bailey - Chief Engineer}, 16.11.37., Agreed By.{R.W. Bailey - Chief Engineer} DA.{Bernard Day - Chassis Design}, 16.11.37., Agreed Da.{Bernard Day - Chassis Design} RHC.{R. H. Coverley - Production Engineer}, 16.11.37., Agreed RHC.{R. H. Coverley - Production Engineer} MX.{John H Maddocks - Chief Proving Officer}, 16.11.37., Agreed Mx.{John H Maddocks - Chief Proving Officer} RM.{William Robotham - Chief Engineer}, 14.10.37., Agreed Rm.{William Robotham - Chief Engineer} | ||